{"schema":"threatline.record/2","record":{"id":"CVE-2026-102559","aliases":[],"summary":"Libsoup: libsoup: heap buffer overflow during websocket client-frame masking","details":"A flaw was found in libsoup. When constructing a masked WebSocket client frame for a very large outgoing payload, size values passed to GByteArray allocation APIs could be truncated while the masking routine still used the full length, causing a heap buffer overflow.","categories":["Operating systems"],"product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102559","source_modified_at":"2026-10-19T04:14:44.470Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"version":"0:3.6.5-3.el10_2.20","lessThan":"*","versionType":"rpm","status":"unaffected"}],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102559","source_modified_at":"2026-10-19T04:14:44.470Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat","versions":[{"version":"0:2.62.3-19.el8_10","lessThan":"*","versionType":"rpm","status":"unaffected"}],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102559","source_modified_at":"2026-10-19T04:14:44.470Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat","versions":[{"version":"0:2.62.3-19.el8_10","lessThan":"*","versionType":"rpm","status":"unaffected"}],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102559","source_modified_at":"2026-10-19T04:14:44.470Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"version":"0:2.72.0-16.el9_8.8","lessThan":"*","versionType":"rpm","status":"unaffected"}],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102559","source_modified_at":"2026-10-19T04:14:44.470Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat","versions":[],"defaultStatus":"unknown"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102559","source_modified_at":"2026-10-19T04:14:44.470Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat","versions":[],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":8.6,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00404,"percentile":0.33482,"score_date":"2026-10-23"},"published_at":"2026-09-29T17:15:34.470Z","modified_at":"2026-10-19T04:14:44.470Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102559","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T04:14:44.470Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102559","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://access.redhat.com/errata/RHSA-2026:83384","tags":["vendor-advisory","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://access.redhat.com/errata/RHSA-2026:83618","tags":["vendor-advisory","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://access.redhat.com/errata/RHSA-2026:84586","tags":["vendor-advisory","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://access.redhat.com/security/cve/CVE-2026-102559","tags":["vdb-entry","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543285","tags":["issue-tracking","x_refsource_REDHAT"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-09-30T19:42:40.159345Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T04:14:44.470Z","content_hash":"a9696a9322f0dd3e4a6a3a3f82f6149dbe4b87c5560447119623dbc7128dd87f"}}